View Code of Problem 43

#include<stdio.h>
#include<string.h>
#define N 10010
int main()
{
    char str[N];
	scanf("%s",str);
	int len=strlen(str);
	for(int i=0;i<len;i++)
	{
		if((65<=str[i]&&str[i]<=90)||(97<=str[i]&&str[i]<=122))
			printf("%c",str[i]);
	}
	getchar();
	return 0;
	
}